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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 5); 21 (, 1 to 5); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 5); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 45 (, 6); 47 (, 1 to 6); 48 (, 1 to 7); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 2 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 5); 61 (, 1 to 6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 3, 5, 6); 69 (, 1 to 6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 3); 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1998; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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LOCKSS Archive
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Preserved
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2026-02-09
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47 to 051
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Internet Archive
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Preserved
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2025-08-08
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43 to 51
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.44:1-6,sup.s1,sup.s6;vol.45:1-6;vol.46:1-6;vol.47:1-6;vol.48:1-6,sup.s1;vol.49:1-6;vol.50:1-6,sup.s1;vol.51:1-6;vol.52:1-6;vol.53:1-6,sup.s1;vol.54:1-6;vol.55:1-6;vol.56:1-6;vol.57:1-6;vol.58:1-6;vol.59:1-6;vol.60:1-6;vol.61:1-6;vol.62:1-6;vol.63:1-6;vol.64:1-6;vol.65:1-6;vol.66:1-6;vol.67:1-6
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 27(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 40(1-6), 1994: 41(1-6), 1995: 42(1-6), 1996: 43(1-6), 1997: 44(1-6), 1998: 45(1-6), 1999: 46(1-6), 2000: 47(1-6), 2001: 48(1-6), 2002: 49(1-6), 2003: 50(1-6), 2004: 51(1-6), 2005: 52(1-6), 2006: 53(1-6), 2007: 54(1-6), 2008: 55(1-6), 2009: 56(1-6), 2010: 57(1-6), 2011: 58(1-6), 2012: 59(1-6), 2013: 60(1-6), 2014: 61(1-6), 2015: 62(1-6), 2016: 63(1-6), 2017: 64(1-6), 2018: 65(1-6), 2019: 66(1-6), 2020: 67(1-6), 2021: 68(1-6), 2022: 69(1-6), 2023: 70(1-6), 2024: 71(1-6), 2025: 72(1-6), 2026: 73(1-2)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2000: 47(1-6), 2001: 48(1-7), 2002: 49(1-6), 2003: 50(1-6), 2004: 51(1-6)
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CLOCKSS Archive
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Preserved
|
2026-02-09
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1 to 73
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 5 (, 1 to 6); 6 (1 to 6); 7 (1 to 6); 44 (, 1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (, 1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (, 1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1, 4 to 6); 72 (1 to 5)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 5 (, 1 to 6); 6 (1 to 6); 7 (1 to 6); 44 (, 1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (, 1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (, 1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1, 4 to 6); 72 (1 to 5)
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Library of Congress
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Preserved
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2025-04-07
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41 (5); 45 (6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 5); 64 (1, 3); 65 (1 to 3, 5); 66 (1 to 6); 67 (2 to 6); 68 (1 to 6); 69 (1 to 6); 70 (1, 5, 6)
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